“ However, the Mishnah deals only with women, probably for the reason that while sexual relations with a zavah are prohibitted, they are permitted with a zav. For this reason, as well as for the reason that a woman becomes a niddah on a monthly basis, women need to be more concerned with their state of ritual purity than men. It was therefore more common that a woman would bring a bird-pair than a man, and the Mishnah uses the common case as its example. ”

“ For whichever the kohen pleases, he may offer a sin-offering Rabbi Yosi teaches that when two women purchased their bird-pairs together as a mixed group, they are not considered to belong to one or the other of the women until the kohen designates them for their specific owner and sacrifice type (i.e., sin-offering or elevation-offering) . If the birds were considered to belong to a specific woman (with a doubt as to which) , the laws of the previous mishnah regarding mixed sets of bird-pairs would apply, and only some of the birds could be sacrificed (see mishnah 4) . ”

“ For a vaginal discharge Certain types of vaginal discharge render a woman impure (such a woman is called a zavah) . After a seven day period, a zavah immerses in a mikvah and offers a bird-pair to become ritually pure. (Vayikra 15:19–30)
A man may also become impure through genital discharge (this man is known as a zav) . ”